package io;

import java.io.*;

public class CopyDemo2 {
    public static void main(String[] args) throws IOException {
        FileInputStream fis = new FileInputStream("./1.png");
        FileOutputStream fos = new FileOutputStream("1_cp2.png");
        byte[] buf = new byte[1024*10];
        int d;
        long start = System.currentTimeMillis();
        while((d=fis.read(buf))!=-1){
            fos.write(buf,0,d);
        }
        long end = System.currentTimeMillis();
        System.out.println("复制完毕，耗时："+(end-start)+"ms");
        fis.close();
        fos.close();

    }
}
